Tar-extractor.



' E. H. EARNSHAW.

TAR EXTRAGTOB.

APPLICATION FILED APB..11, 1908.

907,583. Patented Dec. 22, 1908;

2 BHEETSSHEET 1.

WITNESSES: INVENTOI? W I larizs w E. H. EARNSHAW.

TAR EXTRAGTOB.

APPLICATION FILED APB Patented Dec. 22, 1908.

2 BHEETSSHEET 2.

INVEN T01? zzawaz m' W/ TAM $858:

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Arromvz UNITED STATES OFFICE. EDWARD n. EARNsnAwfoF ORANGIE, NEW JERSEY, Assrehon To rnnu'nrrnn GAIS IMPROVEMENT COMPANY, OF;PHILADELPHIA, PENNSYLVANIA-{A CORPORATION OF PENNSYLVANIA.

4 'ran-nxrnacron.

To all whom "it may concern;

Be a known that I, EDWARD H. Eman- SHAW, a citizen of the United States, residing pact and ca able of use even in cellars and efiicient un er widevariations of gas flow; to control the movements of the gas bell in such manner that they are not too sudden.

. and are not exaggerated; to rovide for ar ranging the parts which sea the countervbalancing connections ofthe bell within the shell or casing; and to provide for presenting the same number of perforations in each of the walls of the bell for the passage of gas in ,any position of the hell, it being-understood that the number of perforations presented in each 'wall is always the same but the 7 number of course differs for diflerent posiin s in whichof the invention.

tions of the bell.

The invention will be finally claimed but one embodiment of it will first be described in connection .with the accompanying drawlgure 1, is a transverse central vertical section of a tar extractor embodying features Fig.- 2, is a similar View showing part of the extractor With the members thereof in different positions from those shown in Fig. 1. Fig. 3, is a sectional view drawn to an enlarged scale and illustrating thedisf osition of the perforations in the walls 0 the bell. Fi 4, is a view illustrating an arrangement 0 the perforations in the walls of the bell. Fig. 5, is a similar view showing a modified arrangement, and Fig. 6, is a horizontal sectional view illustrating features of construction.

In the drawings 1, is a casing having a gas inlet pipe 2, projecting upward through its base to afford space for a liquid seal 3.

4 is a gas ofl-take connection from the casing.

5, is an overflow connection which is suitably sealed.

6, is a draw-off connection for tar shown as provided with a suitable valve or stopper 7.

8, is a movable bellarranged in the shell. There is an opening 9,- through the top of the Specification of Letters Patent.

Application filed April 11, 1908. Serial No. 426,433.

Patented Dec. 22, 1998.

.shell and from this opening dependsa tube 10. 'There is alsoan o ening through the top of the bell from whic depends a tube 11, arranged concentrically with the tube 10. A rod 12, is connected with the lower end of the tube 11, as by means of a spider 13. The upper end of this rod- 12, is attached to t e chain 14, which runs over pulleys or Wheels 15 and 16, of which one is arranged at the top and the other at the side of the casing, and the chain carries at its end a. Weight 17, which is sufficient to artially counter-balance the weight of the be 1 8, and connected parts.

There is a well 18, shown as arranged in the projectingend of the gas inlet ipe 2, and supported by spiders 19. Into t 1s wellthe lower ends of the tubes 10 and 11, dip.

Thus the outlet at the top of the casing is;

sealed in all positions of the bell.

20, is a duct communicating with the Well 18, and with the seal space at the bottom of the casing 1, so that the well is kept full.

from the contents of the casing. r

The dependin walls of the bell encircle the end of the inletpipe' 2, and arearranged to dip into the liquid seal 3. The walls 21., 22, 23, 24, and 25, of the bell are concentric and each wall is provided with groups of perforations. The groups of perforations in the succeeding walls are in staggered relation as shown in Fig. 6. Considering all the groups of perforations of each wall, the perforations are less numerous at the top than they are at the bottom and considerin the walls successively from the inside to t e outside, the highest perforations in each wall are arranged nearer to the top of the bell than in the preceding wall. In Fig. 4, the groups of perforations areshown at 26, and in Fig. 5, they are shown at 27, and less perforations in the aggregate are presented at the top than at the bottom in Fig. 4, by gradually diminishing the number of perforations in each group, and in Fig. 5, by extending some of the groups nearer to the top than the others. Since the groups are staggered, a blank space 28, is presented opposite each group of perforations 26, as shown in Fig. 6.

29, is a flange projecting inward from the shell 1, and arranged in the seal space. 30, is a similar flange arranged at a somewhat higher elevation than the flange 29. Each of these flanges is shown as extending about and fall of the bell.

half way around the casing." 31, and 32, are similar flanges projecting from the external wall 'of the shell. The purpose of these flanges is to control the movements of the bell and of the liquid between the bell and easing.

Assuming the parts to be in their normal positions, as shown in Fig. 2, then upon the passage of gas through the apparatus, as indicated by the arrows in Fig. 1, the pressure.

ofthe gas lifts the bell 8, more or less high according to changes in the rate of flow of gas, but unduly sudden or violent movements of the bell are opposed by the flanges on the top thereof and increases toward thebottom thereof, it follows that any given increase in the rate of flow of gas will demand a length "tions to be uncovered in each wall a though of rise in the bell which is greater inv the lower than in the higher positions of the bell;

this makes the apparatus more delicate in operation at low rates of fl w of gas. Thereis a loss of ressure from he center of the bell outward so that the liquid seal 3, does not stand at the same level but at levels rogressively higher, as shown in Fig. 1, w en the gaslis passing. The fact that the perforations are progressivel arranged higher up in each succeeding Wal from the center of the bell to the outside thereof, as shown in.

Fig. 3, causes the same number of erforathe top of the seal is at rogressively higher levels as has been descri ed, and in this way the requisite velocity of the gas is approxlmately the same throughthe perforations-of all the successive walls. ent positions of the bell the number of perforations uncovered in each wall is the same but this number varies according to the "height of the bell. .The tubes 10 and 11, in

connection with the well 18, prevent the escape of gas through the opemng 9, and since these parts are arranged within the interior of the device so as not to project from it, the

n 'han es'arranged in the liquid seal and resfpecthe Of course in difier- 1. In. a tar extractor the combination of a casing havin inlet and ofli-take connections and a space or a liquid seal, a movable partially counter-balanced bell arranged in the casing and having erforated side walls dip into the liquid seal, and complemental tive y projecting from theouter wall 0 bell and the inner wall'of the casing to govem the movements of the bell, substantlally' as described.

2. A tar extractor comprising the combi- I nation of a casing having inlet and off-take connections and a, liquid seal, and a movable bell arranged in the casing and having a series of depending walls di ping into t e liquid seal and provided wit staggered of perforations, the perforations in eac wall being less numerous atthe top than at the bottom of the wall and the'perforations in the respective walls being arranged higherup progressively from the mterior toward the exterior of the bell, substantially as described.

3. A tar extractor comprising a casing having outlet connections and an opening in its top and an inlet ipe rojecting through itsbottoni to forms. i ui seal space, amovable bell arranged in t ceasing, complemental flanges projecting respectively from the casing and bell and arranged in the-liquid seal, counter-balancing connections arranged through the opening in the top of the casing and connected withth'ebell, a well in the oups I casing,, tubes dependin from the casing into the well and respective y connected with the tops of the casing and bell, and the bell hav- 1 than they are at the bottom and the perforations extending higher toward the, topsof the walls progressively in the various Walls from the center of the casing outward, substantially as described.

' In testimony whereof I have hereunto signed my name in the presence of witnesses.

g EDWARD EARNSHAW.

Witnesses: WM. K. HARBAUGII, W. BENSON. 

